Metabolic fuels.
D000273:Adipose Tissue / Q000378:metabolism*; D000328:Adult; D005215:Fasting; D049673:History, 20th Century; D006801:Humans; D008099:Liver / Q000378:metabolism*; D008297:Male; D009132:Muscles / Q000378:metabolism*; D009420:Nervous System / Q000378:metabolism*